vgmstream/audacious/plugin.cc
2018-07-21 20:11:42 +02:00

297 lines
9.0 KiB
C++

/**
* vgmstream for Audacious
*/
#include <cstdlib>
#include <algorithm>
#include <string.h>
#if DEBUG
#include <ctime>
#include <sys/time.h>
#endif
#include <libaudcore/audio.h>
extern "C" {
#include "../src/vgmstream.h"
}
#include "plugin.h"
#include "vfs.h"
#ifndef VERSION
#include "../version.h"
#endif
#ifndef VERSION
#define VERSION "(unknown version)"
#endif
#define CFG_ID "vgmstream" // ID for storing in audacious
#define MIN_BUFFER_SIZE 576
/* internal state */
VgmstreamPlugin aud_plugin_instance;
Settings vgmstream_cfg;
VGMSTREAM *vgmstream = NULL;
const char *const VgmstreamPlugin::defaults[] = {
"loop_forever", "1",
"loop_count", "2",
"fade_length", "3",
"fade_delay", "3",
NULL
};
const char VgmstreamPlugin::about[] =
"vgmstream plugin " VERSION " " __DATE__ "\n"
"by hcs, FastElbja, manakoAT, bxaimc, snakemeat, soneek, kode54, bnnm and many others\n"
"\n"
"Audacious plugin:\n"
"ported to Audacious 3.6 by Brandon Whitehead\n"
"adopted from Audacious 3 port by Thomas Eppers\n"
"originally written by Todd Jeffreys (http://voidpointer.org/)\n"
"\n"
"https://github.com/kode54/vgmstream/\n"
"https://sourceforge.net/projects/vgmstream/ (original)";
const PreferencesWidget VgmstreamPlugin::widgets[] = {
WidgetLabel(N_("<b>vgmstream Config</b>")),
WidgetCheck(N_("Loop Forever:"), WidgetBool(vgmstream_cfg.loop_forever)),
WidgetSpin(N_("Loop Count:"), WidgetInt(vgmstream_cfg.loop_count), {1, 20, 1}),
WidgetSpin(N_("Fade Length:"), WidgetFloat(vgmstream_cfg.fade_length), {0, 60, 0.1}),
WidgetSpin(N_("Fade Delay:"), WidgetFloat(vgmstream_cfg.fade_delay), {0, 60, 0.1}),
};
void vgmstream_cfg_load() {
debugMessage("cfg_load called");
aud_config_set_defaults(CFG_ID, VgmstreamPlugin::defaults);
vgmstream_cfg.loop_forever = aud_get_bool(CFG_ID, "loop_forever");
vgmstream_cfg.loop_count = aud_get_int(CFG_ID, "loop_count");
vgmstream_cfg.fade_length = aud_get_double(CFG_ID, "fade_length");
vgmstream_cfg.fade_delay = aud_get_double(CFG_ID, "fade_delay");
}
void vgmstream_cfg_save() {
debugMessage("cfg_save called");
aud_set_bool(CFG_ID, "loop_forever", vgmstream_cfg.loop_forever);
aud_set_int(CFG_ID, "loop_count", vgmstream_cfg.loop_count);
aud_set_double(CFG_ID, "fade_length", vgmstream_cfg.fade_length);
aud_set_double(CFG_ID, "fade_delay", vgmstream_cfg.fade_delay);
}
const PluginPreferences VgmstreamPlugin::prefs = {
{widgets}, vgmstream_cfg_load, vgmstream_cfg_save
};
// validate extension
bool VgmstreamPlugin::is_our_file(const char *filename, VFSFile &file) {
const char * ext = strrchr(filename,'.');
if (ext==NULL)
ext = filename+strlen(filename); /* point to null, i.e. an empty string for the extension */
else
ext = ext+1; /* skip the dot */
size_t ext_list_len = 0;
const char ** ext_list = vgmstream_get_formats(&ext_list_len);
for (int i=0; i < ext_list_len; i++) {
if (!strcasecmp(ext, ext_list[i]))
return true;
}
return false;
}
bool VgmstreamPlugin::init() {
debugMessage("init");
vgmstream_cfg_load();
debugMessage("after load cfg");
return true;
}
void VgmstreamPlugin::cleanup() {
debugMessage("cleanup");
vgmstream_cfg_save();
}
// called every time the user adds a new file to playlist
bool read_data(const char * filename, Tuple & tuple) {
STREAMFILE *streamfile = open_vfs(filename);
if (!streamfile) return false;
VGMSTREAM *vgmstream = init_vgmstream_from_STREAMFILE(streamfile);
if (!vgmstream) {
close_streamfile(streamfile);
return false;
}
tuple.set_filename(filename); //may leak string???
int rate = get_vgmstream_average_bitrate(vgmstream);
tuple.set_int(Tuple::Bitrate, rate);
int ms = get_vgmstream_play_samples(vgmstream_cfg.loop_count, vgmstream_cfg.fade_length, vgmstream_cfg.fade_delay, vgmstream);
ms = ms* 1000LL / vgmstream->sample_rate;
tuple.set_int(Tuple::Length, ms);
tuple.set_str(Tuple::Codec, "vgmstream codec");//doesn't show?
// here we could call describe_vgmstream() and get substring to add tags and stuff
close_streamfile(streamfile);
close_vgmstream(vgmstream);
return true;
}
//for Audacious <= 3.7 (unused otherwise)
Tuple VgmstreamPlugin::read_tuple(const char *filename, VFSFile &file) {
debugMessage("read_tuple");
Tuple tuple;
read_data(filename, tuple);
return tuple;
}
//for Audacious >= 3.8 (unused otherwise)
bool VgmstreamPlugin::read_tag(const char * filename, VFSFile & file, Tuple & tuple, Index<char> * image) {
debugMessage("read_tag");
return read_data(filename, tuple);
}
bool VgmstreamPlugin::play(const char *filename, VFSFile &file) {
debugMessage("start play");
int current_sample_pos = 0;
int rate;
STREAMFILE *streamfile = open_vfs(filename);
if (!streamfile) {
printf("failed opening %s\n", filename);
return false;
}
vgmstream = init_vgmstream_from_STREAMFILE(streamfile);
close_streamfile(streamfile);
if (!vgmstream || vgmstream->channels <= 0) {
printf("Error::Channels are zero or couldn't init plugin\n");
if (vgmstream)
close_vgmstream(vgmstream);
vgmstream = NULL;
return false;
}
short buffer[MIN_BUFFER_SIZE * vgmstream->channels];
int max_buffer_samples = sizeof(buffer) / sizeof(buffer[0]) / vgmstream->channels;
int stream_samples_amount = get_vgmstream_play_samples(
vgmstream_cfg.loop_count, vgmstream_cfg.fade_length,
vgmstream_cfg.fade_delay, vgmstream);
rate = get_vgmstream_average_bitrate(vgmstream);
set_stream_bitrate(rate);
open_audio(FMT_S16_LE, vgmstream->sample_rate, vgmstream->channels);
int fade_samples = vgmstream_cfg.fade_length * vgmstream->sample_rate;
while (!check_stop()) {
int toget = max_buffer_samples;
int seek_value = check_seek();
if (seek_value > 0)
seek(seek_value, current_sample_pos);
// If we haven't configured the plugin to play forever
// or the current song is not loopable.
if (!vgmstream_cfg.loop_forever || !vgmstream->loop_flag) {
if (current_sample_pos >= stream_samples_amount)
break;
if (current_sample_pos + toget > stream_samples_amount)
toget = stream_samples_amount - current_sample_pos;
}
render_vgmstream(buffer, toget, vgmstream);
if (vgmstream->loop_flag && fade_samples > 0 &&
!vgmstream_cfg.loop_forever) {
int samples_into_fade =
current_sample_pos - (stream_samples_amount - fade_samples);
if (samples_into_fade + toget > 0) {
for (int j = 0; j < toget; j++, samples_into_fade++) {
if (samples_into_fade > 0) {
double fadedness =
(double)(fade_samples - samples_into_fade) / fade_samples;
for (int k = 0; k < vgmstream->channels; k++)
buffer[j * vgmstream->channels + k] *= fadedness;
}
}
}
}
write_audio(buffer, toget * sizeof(short) * vgmstream->channels);
current_sample_pos += toget;
}
debugMessage("finished");
if (vgmstream)
close_vgmstream(vgmstream);
vgmstream = NULL;
return true;
}
void VgmstreamPlugin::seek(int seek_value, int &current_sample_pos) {
debugMessage("seeking");
// compute from ms to samples
int seek_needed_samples = (long long)seek_value * vgmstream->sample_rate / 1000L;
short buffer[MIN_BUFFER_SIZE * vgmstream->channels];
int max_buffer_samples = sizeof(buffer) / sizeof(buffer[0]) / vgmstream->channels;
int samples_to_do = 0;
if (seek_needed_samples < current_sample_pos) {
// go back in time, reopen file
debugMessage("reopen file to seek backward");
reset_vgmstream(vgmstream);
current_sample_pos = 0;
samples_to_do = seek_needed_samples;
} else if (current_sample_pos < seek_needed_samples) {
// go forward in time
samples_to_do = seek_needed_samples - current_sample_pos;
}
// do the actual seeking
if (samples_to_do >= 0) {
debugMessage("render forward");
// render till seeked sample
while (samples_to_do > 0) {
int seek_samples = std::min(max_buffer_samples, samples_to_do);
current_sample_pos += seek_samples;
samples_to_do -= seek_samples;
render_vgmstream(buffer, seek_samples, vgmstream);
}
debugMessage("after render vgmstream");
}
}
void debugMessage(const char *str) {
#ifdef DEBUG
timeval curTime;
gettimeofday(&curTime, NULL);
int milli = curTime.tv_usec / 1000;
char buffer[80];
strftime(buffer, 80, "%H:%M:%S", localtime(&curTime.tv_sec));
char currentTime[84] = "";
sprintf(currentTime, "%s:%d", buffer, milli);
printf("[%s] Debug: %s\n", currentTime, str);
#endif
}